Carbureter.



L. BOLLEE. GARBURETER.

APPLICATION FILED APR. 7, 1909.

LfifiASQ 1 PatentedDeamwm 'on"rrnn s rrcrns PATENT err-iron -LE0N'B0LLEE.0r.LEiaANs,FRANcE.

CARBURETER. V I H Specification of Letters Patent.

latcntcd Dec. 1 fat 5?! Application filed April 7. 190 Serial No. 488,348.

bility of operation. the number of said successively operating carbureters in each apparatus being preferably restricted to two. In such an apparatus. in order to utilize all the advantages attorded by the regulating means which moreover can be of any desired form. it .is preferable to choose for. the car bureter which the first to become operatire (that insuring the starting or low speed) a earlnireter with a fixed airvinlet, thus avoiding all chances of leaks through the extensible or additional air inlet. and it is advisable to choose for the following carbureter or carburetors intended to make possible high speeds. a type of carbureter with additional air inlet. which is thus ablc'to open the greater passage for the air the quicker the engine is working.

By way of example, the only figure of the accompanying drawing shows diagrammatically a arbnreter constituted by the combination of a first carbureter intended to insure alone slow or medium working, which is regulated by a progressive resistance at the petrol outlet with a second carburetor intended to make possible high speeds and regulated by an additional air inlet.

In that figure, a is a tank for the carbureting medium or'tuel with a constant level. 7) is the sprayer of the first carbureter, the one insuring slow. working, e is tl1es1n'ayer of the second ca'rbureterthat which becomes operative tor high speeds,-r/ is'the air inlet of the first carbureter, c is the air inlet of the second carbureter, f is the additional air inlet of the second carburetor, shown diagrammatically by a simple ball raised by the suction and enabling air to arrive at f/ at the same time as the air arriving through c. The carbureted air from the first carbureter passes through in pipe .4 at

an elongated openingj which is closed by the mixture throttling piston /r when ythe latter rests on its scat m. blit uncoveredby the orifice when the piston rises. llltts enabling carbureted air from the first carbureter to be drawn in in ample quantity by the engine. 'hen the piston it is resting on its seat UL, it closes perfectly the second. car-- hureter. nor can the carlmrcted airtroni the first carbureter be drawn iniby the engine (the orifice jbeing closed) except through 2 branch I constituted by a simple passage that can be more or less throttled by means of a screw Q enabling the minimum passage for the lowest speed toiberegulated in the tilt"- accurate manner. During the whole of the time occupied by the piston 71 in uncovering the orifice j. the piston 1 continues to close circulnterentially the carlnireted air from the second carbureter. the said a lmission becoming possible only when the piston 72. has been raised to a su'tlicient extent to enable the openings 12 of the piston to pass beyond the seat ml which takes place. exactly when the opening of the first carbureter is completely open.

The opening of the different passages takes place theretore in the tollowing order: 1. The piston it being completely Lowered. there is no other opening except the branch Z of the first carburetor. 2. On the piston 72 being raised, the first carburetor becomes fully operated through the opening j being fully uncovered. The second carburetor becomes operative as soon as the openings 0') of the piston pass beyond the seat m; the admission of air, owing to the suction is then e'fiected through c by drawing in the carbureting medium at c. 4. The suction or partial vacuum becoming sufliciently great in the second carbureter. the additional air inlet f is opened and the air from the same also passes through the openings '11 at the same time asthe air which is admitted at c.

The first carbureter obtains its carbureting medium from an auxiliary chamber a supplied through an orifice 0 of suitable dimensions and sufliciently small to bring about the sinking of the level in the auxiliary chamber 1) when the output of the sprayer 7) becomes great. In fact when a relatively great suction takes place, as the orifice 0 has a smaller section than the outlet conduit of the auxiliary chamber p. the liquid contained in the latter flows ott more rapidly than the liquid in the main reservoir and consequently a lowering of the level at 1) takes place. due to the said lowering of the level of the liquid, regulates automatically the carbureting of the said first carbureter, while the additional air inlet f of the second carbureter automatically tion of the latter.

The means indicated for reducing the outlet or escape of the liquid from the first carbureter, or for producing an additional air inlet in the second carbureter, are given merely diagrammatically and by way of example. The example given comprises only two earbureters, but for large engines it may be'advisable to use more carbureters when those already utilized no longer afford sufficient range.

What I claim as my invention and desire to secure by Letters Patent is z- In carbureting apparatus comprising a The loss of head i regulates the carburiza-- plurality of carbureters the combination with a main carbureter, an inlet pipe and a throttle valve therein adapted to isolate the main earbureter from the inlet pipe, and an additional air inlet in said pipe, of an auxiliary carbureter comprising an open feed chamber adapted to regulate automatically the supply of carbureting medium, a normally open conduit connecting said aux- 3 iliary carbureter with the inlet pipe and i means on said throttle valve for increasing I the outlet area of said conduit when the throttle valve is opened to allow the opera I l l i tion of the main carbureter.

In testimony whereof I have signed my name to this specification in the presence of two subscribing Witnesses.

LEON BoLLEE.

Witnesses:

GRANGERCONSTANT MARIE,

HRIN LiioN. 

